Functional Connectivity Changes During Early Recovery as a Marker for Relapse

Inclusion Criteria: * At least 18 but no more than 45 years old at the time of consent. * Able to provide written consent and comply with study procedures. Exclusion Criteria: * Any medical condition or treatment with neurological sequelae (i.e. stroke, tumor, loss of consciousness for more than 30 minutes, seizures, HIV). * Any contraindications to MRI scanning (i.e. metal implants, pacemakers, etc.). * Intellectual developmental disorder as defined in the DSM-V. Participant may have a diagnosis of an Axis I disorder (i.e. anxiety disorders, mood disorders, eating disorders, psychotic disorders), but it must be considered stable. * Actively suicidal. * Positive screen for alcohol and/or drugs. Participants who screen positive for drugs and/or alcohol may return at a later date to screen for the study again. * Evidence for Wernicke-Korsakoff syndrome. * Healthy Controls may never have had any form of substance use disorder other than caffeine or nicotine. Nicotine use will be recorded but will not be an exclusion criterion.